American Fact Finder is a subsidiary of the U.S. Census Bureau that compiles a vast array of socio-demographic data at the national, state, county, place, tract, block group and block levels for all territory within the United Sates. AFF conducts continual one, three and five year surveys and provides the most up-to-date census data.

The State Data Center of Iowa is a source for population, housing, business and government statistics about the state of Iowa and Iowa's cities and counties, including data from the U.S. Census Bureau, Iowa state agencies, and other state and federal sources.

The Greater Dubuque Development Corporation (GDDC), the City's primary economic development partner, is an excellent resource for additional demographic information of the City and County of Dubuque. Additional demographic information is available from GDDC.